Antistatic treatment of shaped articles comprising a vinyl resin and treated articles



butyl) Patented Sept. 15, 1953 ANTISTATIC TREATMENT OF SHAPED ARTICLES COMPRISING A VINYL RESIN AND TREATED ARTICLES Joseph J. Carnes, Greenwich, and William T. Booth, Jr., Springdale, Cnn., assignors to American Cyanamid Company, New York, N. Y., a corporation of Maine No Drawing. Application July 21, 1950, Serial No. 175,296

11 Claims. 1

This invention relates broadly to the treatment of shaped articles, and more particularly to the treatment of shaped articles comprising a thermoplastic vinyl resin with an antistatic agent, and to the treated articles. The invention especially is concerned with a method of conditioning a shaped article (e. g., in the form of a fiber, film, etc.) comprising or composed of a thermoplastic vinyl resin to lessen its tendency to accumulate static charges of electricity thereon by contacting such an article with an antistatic agent comprising a sulfosuccinate salt represented by the general formula where R represents a long-chain aliphatic (saturated or unsaturated aliphatic) radical and Gn represents a cationic salt-forming substance of I the class consisting of guanidine, lower-alkylguanidines (e. g., mono-, diand trimethylguanidines, mono-, diand triethylguanidines, mono-, diand tripropylguanidines, mono-. diand tributylguanidines, mono-, diand triamylguanidines, mono-, diand trihexylguanidines, etc.), phenylguanidines (e. g., monoand diphenylguanidines, etc.) alkylolguanidines [e. g., mono-, diand tri-(hydroxymethyl)-, mono-, diand tri-(hydroxyethyl)-, mono, diand tri- (hydroxypropyl)-, mono-, diand tri-(hydroxymono-, diand tri-(hydroxyamyD- guanidines, etc.], guanylurea, biguanide and phenylbiguanides (e. g., monoand diphenylbiguanides, etc.). When R in Formula I represents a long-chain aliphatic (saturated or unsaturated aliphatic) hydrocarbon radical, said radical can contain, for example, from to 32 or more carbon atoms, but preferably contains from 12 to 18 carbon atoms, inclusive.

Examples of compounds and classes of compounds embraced by Formula I, all of which are diguanidine or 'di- (substituted guanidine) salts of an ester of sulfosuccinic acid, are:

Decyl to octodecyl, inclusive, diguanidine sulfosuccinates Decyl to octadecyl, inclusive, bis-(alkylolguanidine) sulfosuccinates Decyl to octadecyl, inclusive, bis-(lower-alkylguanidine) suliosuccinates Decyl to octadecyl, inclusive, bis-(phenylguanidine) sulfosuccinates Decyl to octadecyl, inclusive, bis-(guanylurea) sulfosuccinates Decyl to octadecyl, inclusive, bis-(biguanide) sulfosuccinates Decyl to octadecyl, inclusive, bis-(phenylbiguanide) sulfosuccinates Compounds represented by the general formula 11 o o O-Gn RC o ORO o o-om-cn S O 3- G11 Compounds represented by the general formula III COOGn SOs-G11 where R and R" have the same meanings as given above with reference to Formula II, and Gn has the same meaning as in Formulas I and II.

It was known to our invention that the alkyl esters of sulfosuccinic acid, and particularly the neutral and acid esters of this acid with aliphatic alcohols containing from 4 to 9 carbon atoms, inclusive, were eiiective wetting, penetrating and emulsifying agents when used in the form of their sodium salts. It was also known (see Langhorst et al. Patent No. 2,265,944) that certain amidine salts of the aforementioned esters of sulfosuccinic acid e. g., monoguanidine dioctyl sulfosuccinate, could be prepared, and that these amidine salts possessed desirable surface-active properties for certain fields of application, more particularly as additives to photographic developing solutions and blueprint emulsions, and as demulsifying agents for breaking emulsions of the water-in-oil type.

We have found that, compounds of the kind embraced by Formula I can be prepared in excellent yields by a practical, relatively inexpensive method, and that they have certain unique properties which make them especially suitable for use in particular applications. Specifically we have found that salts of sulfosuccinates of the kind represented by Formula I have, because of their particular and peculiar constitution, the unique characteristic of obviating or materially lessening the, tendency of articles to accumulate static charges of electricity thereon, which articles, in a dry state, normally (that is, in their normal or untreated condition) have this tendency to accumulate electrostaticcharges. Iilustrative examples of articles which, when dry, tend to accumulate charges of electricity are woolen and silk fabrics, viscose and cellulose acetate rayon fabrics, fabrics made; from thermoplastic vinyl resins, nylon (a synthetic. linear polyamide) and other synthetic linear polymers of the kind disclosed (for example, in Patents 2,071,250-1. i I i Various methods may be employed in producing the compounds of the present invention. A preferred method includes, as a first step, the reaction of a.longchain.'jaliphatic material containing an alcoholic hydroXyl roup with maleic anhydride or acid, preferablythe anhydride, to form the maleic mono-ester. This maleic monoester, isthen reactedwitha sulfite salt of guanidin'e or other compound of the kind represented by GninFormula I. The reaction is preferably carried out in water or in a .mi ;t'ure of water and ethyl or other suitable alcohol. The sulfosuccinate salt therebyproducedcan be isolated from the reaction mass by any suitable means, for eX- ample, by filtration, bycentrifuging, by merely evaporating the solvent, or by partial evaporation of the solvent to the point where the salt crystallizesfrom; the cold solution, andthen separating h cr al e sa fiiqmthe ma s. rfi a em cent ifu n 1 Qmewu ta e s Th rud salts can be purif ed, if desired, by recrystallizatio n irom a suitable solvent, e. g., water, mixtures ofwater and alcohol, etc.

Vehave found that it isn ot possible to prepare and isolate, by any ,practical means, the sulfosuccinate salts oi our invention by conversion of the diso'c'lium stirs to the corresponding diguanidine salts,. as is possible with the mono-sodium salts of the dialkyl sulfosuccinates, due to the insolubility oflthe disodium salts in organic solvents. Surprisingly, however, it was found that salts. of sulfosu'ccinats of the'ki'nd embrac'ed'by Formula I could be prepared'advantageously by theigeneral procedure just described.

The maleic mono-ester ordinarily is prepared by? reacting the aliphatic material containing an alcoholic hydroxyl'group with a slightexcess over one equivalent'of maleic anhydride at a temperature.of.50.-l50 C; preferably 70'-90 C. The reaction isv generally complete at. the'en'd or from 1 to. 4. hours, depending upon the temperature employed, the "particular reactants used and other influencing factors The course of the reaction isv followed by. making .7 determinations of the acid number of the reactionmixture from time to time, The values for, acid number which are obtained areusua lly a few units higher than the theoreticai acid number because of the slight excess of maleic anhydride used in the esterification. Qbviouslygif desired, maleie acid can be used insteadoif maleic anhydride in preparing the maleic mono-ester. V a H i w I a The u t 9 .ihceu i inc. om u be prepared, for example, by reaction of the free 4 base or its carbonate with sulfur dioxide in aque-' ous or aqueous alcoholic solution. If the free base or carbonate of the guanidine compound is not commercially available, it can be produced by known procedures from other salts of the guanidine compound, for instance, from the sulfate or hydrochloride thereof. The second step of the preparation is usually carried out by adding the maleic mono-ester in portions to a solution (for example", an aqueous or an aqueous alcoholic solution) of the guanidine or substituted guanidine sulfite, while maintaining the latter at a temperatureof from about C. to C. In the preme tated of preparation, the portions of the malei'cmono-ester are added at such a rate that one portion has completely reacted with the sjulfitebeiore the next portion is added. When dditi'o'n of ,tlie'malei-c mono-ester to the solution of thes'ulfite has been completed, the reaction is usually allowed to proceed for a suitable additional period, e. g., for l to 2 hours or more,

in order to insure that complete reaction of all of the rnaleic mono-ester has occurred. The completeness of the reaction can be checked by iod me i ti ation $0 r nre ci file- At h end of the reaction period, rhejreacudn mass, whencooLis usuall either a solution, slurry or paste, depending upon the particular Sui-roses cinate salt which is be n prepared, This "reaction mass can be ts eas such, if desired (or after dilutingjit with wateror other "liiju'id'medium if necessary) in such application as, farmers-nee, antistatic treatments, softening of textiles, as lubricating oil detergents, etc. Thejsulfo's'ucci natc salt can be obtainediii solid rerm-me'reiyby evaporation of the solvent from the reaction mass, or by other means such as'havebeniiieirtioned hereinbefor'e;

In using the saltsof the kind embraced by Formula I as antistatic agents, a solution or dispersion of the salt is applied by any suitable means to the article which, in a dry state, normally has a tendency't" accumulate static charges-of ele'ctri'city, followed 'by'drying of the treated article to volatilize the solvent or liquid component. The'treatment is applicable to 'sucharticles in various forms, for instance, in the formof'filamerits, fibers, yarns, films, woven, knitted and felted fabrics, 'etc. These sulfosuccinat'e salts are particularly useful as antistatic'finishes' for-fabrics made of thermoplastic vinyl resins, including polymeric and thermoplastic copolymeric'acrylonitrile polymerization products, etc.

As is well known to th'ose skilled in the art, the vinyl resins constitute a class'of materials which develop or tend to develop"anelectrostatic charge upon th'e'ir"surfaces when fibers or other articles made therefrom are 'sub'jected to'frictionHuriIig their production and'during' rocessing or fabrication of the fibersinto 'fab ric or cther arueies, as well as durin'gftheuse of the-finished "article. The sulfosuccinate "salts of the kind embraced by Formula I (including compounds or the kind covered by Formulas II'andIlI) have been-found to be particularly adapted for use in conditioning filaments, fibers, yarns, films and othersh'aped articles composed" of or" containing a vinyl resin so "as to 'obviate'or: minimize their tendency to accumulate static charges 'of' electricity. Examplcs of vinyl resins, more particularly thermoplastic vinyl resins, which can have antistatic characteristics imparted thereto by meansof our new sulfosuccinate salts, are po lyacrylonitrile, copolymer of acrylonitrileand a different vinyl compound such, for instance, 'as'v inyl chloride,

copolymei's of vinyl acetate and vinyl chloride, etc. Other examples of vinyl resins to which the sulfosuccinate salts employed in practicing the present invention advantageously can be applied as antistatic agents are given in the copending application of Arthur Cresswell, Serial No. 68,372, filed December 30, 1948, now Patent 2,597,708 dated May 20, 1952. The sulfosuccinate salts can be applied either alone to the base material or they may be applied in conjunction with a conventional textile lubricant, e. g., an alkyl ester of a long-chain fatty acid, or with a conventional wetting and/or dispersing agent, a detergent, etc.

The aforementioned sulfosuccinate salts not only are capable of imparting antistatic characteristics to thermoplastic vinyl resins and other articles which normally, when dry, have a tendency to accumulate electrostatic charges, but in general they are also able to effect this result without detrimentally affecting the color, tensile strength, elasticity, flexibility, chemical resistance, bacterial and fungal resistance, and other valuable properties of the vinyl resin; in other words, without rendering the Vinyl resin article (or other material that is treated) in any Way unsuited for its intended purpose.

In using the sulfosuccinate salts of the kind embraced by Formula I as antistatic agents, they are preferabl applied in the form of a liquid dispersion, more particularly an aqueous dispersion, to the thermoplastic vinyl resin or other article being treated. This dispersion may contain any suitable amount of sulfosuccinate salt, but ordinarily the salt is present in the dispersion in an amount corresponding to from about 0.5% to about 5% by weight thereof. The dispersion may be applied, for example, by immersing the fiber (or other shaped article formed of vinyl resin or other material) in the dispersion, or by spraying, padding, brushing or otherwise contacting the shaped article with the dispersion. In applying the dispersion, it is preferably heated to an elevated temperature, e. g., from about 45 or 50 C. to about 95 0., or in some cases even as high as 100 C. The dispersion may be applied at room temperature (20-30" C.) or at temperatures up to 45 C., but the lower temperatures are usually less desirable because of the somewhat greater difficulty in maintaining some of the sulfosuccinate salts homogeneously dispersed in water or other liquid dispersion medium at the lower temperatures. Upon drying the fiber or other shaped article at room temperature or at an elevated temperature, e. g., on heated drying rolls, the treated article has the sulfosuccinate salt deposited at least on the outer surfaces thereof. The amount of sulfosuccinate salt which is present in or on the dried, treated article may vary considerably, but ordinarily it is present therein or thereon in an amount, by weight, corresponding to from about 0.2% to about 4% of the dried, untreated article.

It is not essential that the sulfosuccinate salt be used as the sole antistatic agent or effect agent which is present in the aqueous dispersion. In some cases, however, it is advantageous to use the salt alone, since, because of the long-chain aliphatic grouping, more particularly an aliphatic hydrocarbon grouping and specifically an alkyl grouping, which is present therein, it is capable of functioning both as a lubricating agent and as an antistatic agent. In other cases it may be desirable to use the sulfosuccinate salt in conjunction with a conventional textile lubricant and/or other conditioning agent or agents which are commonly employed in finishing compositions used in treating, for example, thermoplastic vinyl resins in fiber, film or other form. Such auxiliary conditioning agents include mineral, vegetable and animal oils, among which latter may be mentioned blown and unblown neatsfoot oil, sperm oil, olive oil, teaseed oil, peanut oil, soya bean oil and cottonseed oil, as well as the various sulfonated oils, e. g., sulfonated olive oil. Examples of other conditioning agents that may be employed in combination with the sulfosuccinate salt are wetting and dispersing agents of various kinds, for example, N-octadecyl disodium sulfosuccinamate, dioctyl soduim sulfosuccinate, etc., lecithin, esters of long-chain fatty acids, advantageously esters of fatty acids which contain from 12 to 18 carbon atoms, inclusive, e. g., alkyl stearates, palmitates and oleates, more particularly the methyl, ethyl, propyl, butyl, amyl, hexyl, etc., stearates, palmitates and oleates.

The finishing compositions containing an antistatic agent comprising a sulfosuccinate salt of the kind embraced by Formula I may be applied to, for instance, a shaped thermoplastic vinyl resin, for example, yarns of associated filaments of such a resin, in the course of the production of the yarn or other shaped article, or subsequent to the production of the yarn and before or after any textile operations in which such yarns are used, especially those operations which include or involve a winding operation. By applying the finishing composition in the course of producing the filaments or fibers, the application may suffice for subsequent textile operations. If desired, however, the textile-treating agent containing the described antistatic agent may be applied both during the process of producing the yarns as well as later when these yarns are fabricated into textile fabrics.

The sulfosuccinate salts also may be applied to, for instance, thermoplastic vinyl resins when the latter are in gelled form. For example, we may apply a liquid treating agent to a fiber in gel state, more particularly an aquagel state, and in which the solid phase comprises an acrylonitrile polymerization product, more particularly such a product which contains in the molecules, thereof an average of at least about by weight of combined acrylonitrile, which treating; agent comprises an aqueous dispersion contain-,

ing a sulfosuccinate salt of the kind embraced by Formula I. Thereafter the thusly treated, gelled fiber is dried, for example by continuously passing the fiber over heated drying rolls as is described more fully in Cresswells copending application Serial No. 68,370, filed December 30, 1948, now abandoned in favor of application Serial No. 73,078, filed January 27, 1949, as a continuation-in-part of said application Serial No. 68,370, now Patent No. 2,558,731, dated July 3, 1951. In this way the sulfosuccinate salt imparts antistatic characteristics to the fiber both during and after drying thereof.

The sulfosuccinate salts used in practicing the present invention are especially suitable for use in the treatment of water-swollen, oriented or unoriented fibers, films, etc., which have been produced as described, for example, in Cresswells copending application Serial No. 772,200, filed September 4, 1947, now Patent No. 2,558,730, dated July 3, 1951, and in the aforementioned copending application Serial No. 68,370, as well as inthe treatment of the dried products, whereby the tendency of the dried materialto accumulate static charges ofelectricity is obviated or minim'ized and a treated. material which; in general, isso'fter to thetouch is obtained;

Ashas been mentioned hereinbefore, any suitable method may be employed in applying the sulfosuccinate salt or a finishing composition or textile-treating agent containing the same tothe thermoplastic vinyl resin or other base material in fiber, film or other'form, and it may be applied at any suitable stage of the production of the shaped article, or during its fabrication into other forms',-or tothefinished;fabricated artiale and prior to or during its service use. For example, if the" conditioningagent is to be applied to the yarn after spinning, the yarn may be brought into contact with a wick, roll or felt which-has been wettedwith an aqueousor other dispersion or" emulsion containing the sulfo suc'cinate' salt. Alternatively, the liquid finish .ing composition containing the salt-may be ap- 1plied to the articleby" immersingthe article in a bath containing" the" same; or by spraying,

brushing, coating or otherwiseapplyin'g the fin ishin'g composition to'the article. Examples of points during the-production'of a yarn at which the conditioningagent may be applied are during stretching of a wet" spun yarn or" fiber to orientthe moleculesthereof,- or between any of the Ii desired, the' sulfosuccinate salt'which is deposited in or on the-treated article may be allowed to remain in place during and after'the production of'the article'in' its ultimate form.

Generally, however; the applied conditioning agent comprising the sulfo'suceinate salt is re moved-eitherprior-"to dyeing or, if it has-been applied to the dyed-article, prior to'-the sale of the articleto the'tra'de'; Theconditioning agent may be removed,- if des'ired, I from yarns, fabrics and the'like'containing the 'same'by means of the usual aqueous scouring baths.

The preferred vinyl resin which is" subjected to treatment in accordance with one embodiment of our invention is polymeric acrylonitrile or thermoplastic copolymeric acrylonitrile containing in its-molecules 'a subs'tantial amount ofooin= bined acrylonitrile. Of such copolymeric" acryloni'triles, we prefento'treat an acrylonitr'ile"co'-' polymer containing in the polymermolecules an average of at least about 85% of In such copolymerio' combined acrylonitrile. I i I polymerization products, the proportions of men-'- omers in the polymerizable mixtureirom which the copolymers are made preferably are'adjustf ed so that the final copolymer contains inith'e moleculesthereof an average of at least about 85% by weight of "acrylonitrile (combined acrylonitrile). By the expression acrylonitrile polymerizationproduct containing in the molecules thereof an average-of at least about 85% by' weight of combined acrylonitrile, we mean a polymerization product (polymer, copolymer or interpolymer' or mixture thereof) containing its molecules an average 'of-at' least-about 85% by weight of the acrylonitrile' unit, which is con?- 8 sideredxto be present in the individual polymer molecule as the'group )H2( 3H--CN on otherwise'stated, at least about by Weight of the reactant substance converted into and forming the polymerization product is acrylonitrile (combined acrylonitrile). Examples of monomers which may be employed in the preparation of such copolymers of acrylonitrile have been" given hereinbefore" and in the" aforementi'oned Gres'swell copending applications;

The use of salts of the kind embraced by Formula I in the treatment of thermoplastic vinyl resins to obviateor lessen thetendency of such materials to acc'umuate charges of electricity" thereon has numerous advantages, among which may be mentioned their relatively lower cost as compared with others whichhave been suggested for this'same' general purpose; their ease of application (e. g., asaqueous dispersions) the fact that theydonot form insoluble compounds indispersions in hard water; their efiec tivene's'sboth as antistatic-agents and in lubrieating and softening the shaped article in yarn or other form, whereby the treated yarn, film or other article is rendered more amenable to furtheir processing or fabricating (e. g., weaving, knitting, etc, in the case of yar'ns); their comp'a'tibil'ity with othercoln ditioning agents commonly'employed in finishing compositions used in treating fibers and other shaped articles;- their case of removal from the treated article,

when such removal appears to be desirable for subsequent processing or use of the article; their non-harmful effect upon the thermoplastic vinyl resin or other material which is subjected to treatment; as well as other advantages. H

The term yarn as used generically herein includes within itsrneaning a single filament, a plurality of filaments associated into the form of a thread and which maybe of any desired twist, single or multiple threads associated or' twisted together; as'well as staplefibers produced from filaments or threads and'spun yarn produced from such staple fibers. The term fiber as used generically herein includesfwithin its meaning "both monofilaments and multifilaments;

In order thatthose skilled in'the art better may understand how the present' invention' can be carried into effect, the following" examples are given by way of illustration and not by way of limitation. All'pa'rts and percentagesare by weight w EXAMPLE 1 M ono-n-dodecyl diguanz'dine sulfosuccinate /o0o owfisooo-"cm on l: R5 1 1 H2N--ONH2' 2 Eighty-three (83) parts of n-dodecyl alcohol (8. P. 128'l30 C. at 10 mm. pressure) was added slowly with stirring to 44.6" parts of maleic anhydride at a temperatureof 55" 0." The addition required" 15 minutes, during which period the temperature rose'to'70 C. Heating waslcontinuedat '7075 C; for another minutes, yielding 'a' maleicmono ester of n-dodecyl alcohol: V

A solution of 88.5 parts of guanidine sulfite in approximately 700 parts. of water was prepared and heated to C:. The male'ate half ester was adde'dto this solution with stirring over a period ofx35' minutes: Heating was continued for an- EXAMPLE 2 M ononoctadecenyl diguam'dzne sulfosuccinate o o o- Fifty (50) parts of maleic anhydride was melted and heated to 60 C., after which 12'? parts of n-octadecenyl alcohol was added thereto over a period of 15 minutes while maintaining the mass at 60-80 C. The reaction mixture was heated for another 90 minutes at 70-75 C.

The maleic mono-ester of n-octadecenyl alcohol, produced by the above reaction, was added slowly over a period of 80 minutes to a solution of 99 parts of guanidine sulfite in approximately 760 parts of water. The reaction mixture was maintained at a temperature of about 94 C. during the addition and for another 60 minutes thereafter. The resulting clear solution formed a white paste on cooling. The yield was 959 parts of pasty mass which contained about 29% of mono-n-octadecenyl diguanidine sulfosuccinate. The solid product is obtained merely by evaporation of the water from this pasty mass.

EXAMPLE 3 M ono-n-octadecyl diguanidine sulfosuccz'nate Eighteen hundred ninety-four (1894) parts of n-octadecyl alcohol and 714 parts of maleic anhydride were mixed and melted together at 50-55 C. after which the mixture was further heated to 75 C. Heating was then discontinued and the temperature rose to 95 C. The temperature was maintained at 85-95 C. for one hour while stirring the mass. The acid number of the reaction mass was 158 (theoretical acid number 152). After heatingfor an additional 30 minutes the product was poured into a container and allowed to cool. The maleic monoester of n-octadecyl alcohol was a hard, white wax. It was obtained in a yield of 2605 parts, which corresponds to 100% of the theoretical.

One hundred eighty-four (184) parts of the mono-ester produced as above described was melted and added in portions, with vigorous stirring, to a solution of 99 parts of guanidine sulfite in about 1000 parts of water at 90 C. There was considerable foaming and about 12 parts of ethyl alcohol was added to assist in breaking the foam.

The addition required two hours, and stirring was continued for another hour at the same temperature (90 (3.). The resulting product formed a clear, very viscous gel. Upon cooling,

it was a stiff, white paste containing about 24% of monon-octadecyl diguanidine sulfosuccinate. A paste containing 65% of solids was obtained by centrifuging the 24% paste. The sulfosuccinate salt can be recovered from these pastes, if desired, by evaporation of the-liquid; A 2% aque- 10 ous solution of the sulfosucclnate salt was clear at 4050 C. The product crystallized from this solution upon cooling to room temperature.

The product of this example is particularly useful not only as an antistatic agent, but also as a softener for textiles, e. g., cotton fabrics. In the latter applications the sulfosuccinate salt is applied to the textile as an aqueous dispersion containing a small amount (e. g., 0.25 to 1%) of the salt, after which the impregnated textile is dried.

EXAMPLE 4 Mono-woctadecyl bis-(bz'guanide) sulfosuccinate o o o- A solution of 142 parts of biguanide sulfite in 900 parts of water was added slowly to a refluxing solution of 184 parts of mono-n-octadecyl maleate in 240 parts of ethanol at such a rate that reflux was maintained during the addition. The mixture was then stirred for 6 hours while maintaining the mass at the reflux temperature. Upon cooling, a white, pasty slurry containing approximately 29% of mono-n-octadecyl bis- (biguanide) sulfosuccinate was obtained. This sulfosuccinate can be obtained in solid form by evaporation of the water and alcohol from the slurry, or by centrifuging and drying the product in the air.

EXAMPLE 5 Mono-n-octadecyl bis-(n-butylguanidine) sulfasuccinate COO A solution containing 23 parts of n-butylguanidine sulflte in 650 parts of water was prepared by treating n-butylguanidine sulfate with a slurry of calcium hydroxide, filtering oiT the precipitate of calcium sulfate which forms, and adding the required amount of sulfur dioxide to form the sulflte salt of the n-butylguanidine. The resulting solution was added to 28 parts of mono-n-octadecyl maleate in 260 parts of ethanol at SIP- C. The resulting mixture was heated for 4 hours under reflux at the boiling temperature of the mass to yield a clear solution. On cooling, the product crystallized to give a slurry containing about 13% of mono-n-octadecyl bis (n-butylguanidine) sulfosuccinate. This sulfosuccinate can be isolated from the slurry by filtration and drying in the air.

EXAMPLE 6 M ono-n-octadecyl bis- (methylguanidine) sulfosuccznate o o on-CrxHuOOC-CHz-CH I: W

A. solution containing 89 parts of methylguanidine sulfite was prepared in exactly the same manner as the n-butylguanidine sulfite in the preceding example. The resulting solution was added to 144 parts of mono-n-octadecyl maleate dissolved in 550 parts of ethanol at such a rate as to maintain the mixture at reflux temperature. The mixture was stirred for an additional 6 hours under reflux, yielding a white paste on cooling.

This paste contained approximately 16% of mono-n-octadecyl .bis-(Inethylguanidine) sulfoa succinate, which ca n be recovered as such by evaporation of the water and alcohol.

EXAM v M ono-n-octadecyl bisgiiz l'drorgiethylgudni dine) sulfos'ucci'nate A slurry of 100 parts of guanidine hydrochloride in 400 parts of sec.-butyl alcohol was treated with a' solution of .23 parts of metallic sodium dissolved in 400 partsof sea-butyl alcohol. The precipitated sodium chloride was removed by flltration, and the resulting solution of guan idine in sec-butyl alcohol was then concentrated under vacuum. .To the alcoholic solution of guanidine was addedeparts of, ethylene oxide at 75 C. over. a. period of 1%, hours, after which the reaction mixture was stirred for an additional 30 minutes at thissanie temperature. A viscous, orange-colored liquid comprising, 2-hydroxyethylguanidine was obtained upon removal of the solvent under vacuum. The 2-hydroxyethy1guani dine was dissolved insufficient water to form 500 ml. of solution. To th s solution there was added 38 parts of sulfur dioxide, thereby producing a solution of 2-hydroxyethylguanidine su1fite.

A solution of 92 parts oi r'nono-n-octadecyl maleate in 200 parts of ethanol was heated to reflux. To this solution was slowly added a solution containing '72 parts of 2 -hydroxyethylguanidine sulfite in 250 parts ofwater. This mixture was stirred for 6 hours under reflux, yielding a clear solution Upon cooling, the solution formed a white, pasty nia'ss containing approximately 29 mOhQf'n-6 adcy1 bis- (2-hyd'roxyethylguanidine) sulfosuccinate 'lhis sulfosuccinate can be recovered in solid form by evaporation of the solvents;

A solutionor phenylbiguanide sulfite in water A solution containing 88 parts of phnylguanidine sulfite in 500 parts of water was prepared by treating an aqueoussolutidn of phenylguanidine carbonate with sulfur dioiide- T0 th aq ous solution of the phenyl'guanidine sulfite there was added .92 parts of mdno-n octadlecyl male'ate in 400 parts of ethanol. The resulting mixture was heated at the reflux temperature of the mass for i hours; forming a clear solution at the end of this reaction'period. Upon cooling, the solution formed a grey; oily paste containing about 20% of monb-n octa'decyl bis-(phenylguanidim) sulfosuccinate; Which.caf1 be recovered in solid form by evaporation of the Solvents.

M ono-n-octadecyl .Diieflluam/Zurea) sulfosuccinate A solution containing 143 parts of guanylurea sulfite in 750 parts of water was prepared from guanylurea sulfate by the procedure described under Example 5 with reference to the preparation of n-butylguariidine s'ulfite. This solution was i added to 1f1 parts of mono-n-octadecyl male'ate .in 200 parts of ethanol at the reflux temperature or the mass and at such a rate that the mixture remained clear all the time. The resulting mixture was stirred under reflux (ET-99 0.) 013 4 hours, yielding a clear, amber colored solution. When this solution was cooled, it formed a slurry containing approximately 29% of mono-n-octadecyl bis-(guanylurea) sulfosuccinate. ,This,, sullosucginate can be recovered from the slurry by evaporation of the solvents.

ExiiMeLE 11 b M 0110- (3-Stearoylorgifg {fi'y'di'ocyinnpzm diguanidine suljosuccinqte A mixture 01! 340. parts ottechnioal-grado,distilled glyceryl monostearate and 100 parts of maleic anhydride ,was. melted, and thereafter heated with stirring, 0,154. hours at. 85-90? 0., yielding mono-'(3-stearoy1oxy-2-hydroxypropyl) maleate. This .monoeesterwas a light yellow wax having an acidnumber, 03 134. (theoretical acid number, 129). It was obtainfidin a yield of 427 parts, which was 9.7% Oithe theoretical.

One hundred fifty parts of the aforementioned maleic mono-ester was added in portions with stirring over a period of 2 hours to a solution contaming 68 partso'f guanidine sulfite in about 300 parts of water while maintaining the temperature of the mass at 9095 C. After stirring the mixture for another 1% hours at the same temperature, the pH of the mass was adjusted to 6.6. The solution was then evaporated on a steam bath. A light tan, crystalline wax was obtained upon drying the residue at 100 C. The yield of mono-(S-stearoyloxy-Z-hydroxypropyl) diguanidine sulfosuccinate was 218 parts, which was 100% of the theoretical yield. It is especially suitable for use as a softener for textiles, especially cotton and rayon fabrics, since it has a good softening effect upon the textile, while the treated textile shows little or no tendency to yellow under heat, e. g., during drying, ironing, etc.

EXAMPLE 12 M ono- (Z-stearoyloxyethyl) diguanidine sulfosuccinate coo- ., 011153.000oniongooo-ong-cu H C O O HzN-C-NHLJ;

The procedure for the preparation of the above compound is the same as that described under Example 11 with reference to the production of mono-(3-stearoyloxy-2-hydroxypropyl) diguanidine sulfosuccinate with the exception that 328 parts of technical-grade Z-hydroxyethyl stearate is used instead of 340 parts of technical-grade, distilled glyceryl monostearate. The product is initially obtained in the form of a light creamcolored paste, which can be evaporated to a solid if desired.

EXAMPLE 13 M ono-(Z-stearamz'doethyl) diguanidine sulfosuccz'nate ooo- C17H35OONHCHgCHzOOO-CH2Cfi fi s HzNC-NH2 Z-Hydroxyethylstearamide was prepared by refluxing a technical grade of stearic acid with a excess of monoethanolamine in xylene solution until water no longer was evolved. The resulting solution was stripped of Xylene and excess amine to obtain 2-hydroxyethylstearamide as a light tan wax. A mixture of 200 parts of the 2-hydroxyethylstearamide and 61 parts of maleic anhydride was melted and stirred for 2 hours at 98-105 C. The resulting mono-(2-stearamidoethyl) maleate was a light tan wax having an acid number of 128 (theoretical acid number 132).

A solution of 23 parts of guanidine sulfite in about 190 parts of water was heated to 85 C. To the resulting solution there was added 51 parts of the aforementioned mono-(Z-stearamidoethyl) maleate over a period of 30 minutes while maintaining the temperature of the mass at 80- 85 0. Heating and stirring were continued for 3 hours after the addition of the mono-ester. The resulting product was a thick, yellow paste containing about 29% of mono-(2-stearamidoethyl) diguanidine sulfosuccinate, which can be recovered as such by evaporation of the water.

EXAMPLE 14 Mono [5,7,7 trimethyl 2 (1,3,3 trimethg lbutyl) octyl] diguanidine sulfosuccinate CH3 CH3 COO- A solution of 176 parts of 5,7,7-trlmethyl-2- (1,3,3-trimethylbutyl)-octano1-1, 68 parts of maleic anhydride and 3 parts of p-toulenesulfonic acid in 220 parts of toluene was refluxed for 6 hours at 110 C. The reaction mass was concentrated by distilling oil a portion of the toluene under vacuum, after which it was cooled and filtered to remove p-toluenesulfonic acid and unreacted maleic anhydride. The remainder of the toluene was stripped from the filtrate under vacuum, yielding 227 parts of the theoretical) of the maleic mono-ester as a yellow-oil.

To a solution of parts of the aforementioned maleic mono-ester in 320 parts of ethanol, there was added a solution of 65 parts of guanidine sulfitein about 500 parts of water. The resulting mixture was heated under reflux with stirring for 3 hours. I' his solution was then stirred with a decolorizing carbon, after which the carbon was removed by filtration. Upon evaporation there was obtained 180 parts of a sticky, white paste comprising mono-[5,7,7-trimethyl-2- (1,3,3-trimethylbutyl) octyl] diguanidine sulfosuccinate.

EXAMPLE 15 This example illustrates the treatment of various materials, more particularly textile materials, with sulfosuccinate salts of our invention in order to impart antistatic properties to the material undergoing treatment.

Pieces of diiferent kinds of fabrics, specifically fabrics of wool, viscose rayon and acetate twill, 9 x 23 inches in size, were run through 1% aqueous solutions of the sulfosuccinate salts of Examples 1 to 10, inclusive, while maintaining the solutions at F. The impregnated fabrics were then passed through a pad mangle so as to obtain a wet pick-up of approximately 100%. The samples were framed and then dried for 5 minutes at 250 F. After air-drying for 3 days, the fabrics were further dried over anhydrous calcium chloride for a week. The fabrics were placed in a 25 C., 50% relative-humidity atmosphere for 7 days before electrostatic measurements were made on threads taken from each of the treated fabrics.

The testing apparatus consisted of a 045,000 volt D. C. power source, a horizontal charging wire 14 inches long which was supported by two insulating pillars, a thin gauge cylindrical steel enclosure 11 inches in diameter and 8 inches high which served to shield and to maintain a uniform electric field about the charging wire, a circular scale for measuring displacements, a mirror for reflecting the image of the scale, and a glass topped wooden box which housed the charging unit and. shielded the operator from electrical contact.

The procedure followed in making a measurement was to crimp a pair of threads of suitable length in a soldering lug and to suspend this assembly on the charging wire. An electrostatic charge was imparted to the threads by raising the potential of the wire from 0 to 10,000 volts D. C. at the rate of approximately 2000 volts per second. The threads were maintained at 10,000 volts for a suitable period, usually a minute, for the charge to become stabilized on the thread. Since the threads were charged with the same polarity, they repelled each other with a displacement directly related to the quantity of charge transferred. The displacement of the threads was measured by visually projecting the ends of the threads on a mirror scale consisting V 15 or earl-centric circles whose face difie're'd by 0.2 'ifi'h the elfl'd or the charging period, the source was grounded and the time re-' an d for the threads to discharge to a displacement of 0.4 inch was recorded. Discharge rates were calculated by dividing the projected linear distance of travel for a thread by the time required to reach the fixed endpoint. The values reported Table I, which follows, are in each case the average of the measurements obtai ed on five pair's of threads stripped from each fabric. The reported values are the discharge rates in inches per secondX 10 in other words, the figures given in the table are 100,000 times the actual averages. The results on a control s'ampie; whrfn the fabric was treated with water alone, also are given in this table.

Tzusr'rz' I Kind of Fzibr... o

sulfosuccinate of Example N0. Actat Rayon Twill Viscose Wool Rayon EXAMPLE 16 Preparation of maleic mono-ester Approximate 01 Parts m es Lorol B 408 Maleic anhydride (98%) The above ingredients were mixed and heated to 7 C, forming a twophase liquid mixture. Heating was discontinued, and in 15 minutes the mixture became homogeneous and the temperature rose to 80 C. The reaction mass was maintained at 73-'7'7 C. by intermittent heatme; (after cooling from 80 C.) for 2 hours. The acid numbers of samples taken at the end of 1- hour and 2-hour reaction periods were 196 and 197, respectively. The maleic mono-ester produced by the reaction was a yellow oil which solid-ified upon cooling below 50 C. The yield was 1233 parts which corresponds to 99% of the theoretic-al yield.

The guandidine carbonate was dissolved in the water and the bisulfite solution was added slowly thereto while stirring the mass. When evolution of carbon dioxide had largely ceased, the solution was heated. The maleic mono-ester was melted and added to the sulfite solution over a period of l hour while maintaining the mass at -90 C. Evolution of carbon dioxide and considerable foaming occurred during the addition of the first half ofthe maleic mono-ester. The addition was complete in 1 hour, and heat ing of the resulting clear, colorless solution was continued for an additional 1 hours to complete the sulfonation. The solution was then allowed to cool for approximately 16 hours. The product crystallized and formed a slurry. Upon warming this solution to 40 C. a slightly cloudy solution was obtained Dilution of this solution with water yielded a clear, colorless, strongly foaming solutionhaving a pH of 5.3. The weightof the solution was 3311 parts containing 30.6% of the sulfosuccinate salt, which can be isolated as such, if desired.

As will be understood by those skilled in the art, the product identified above as Lor'ol B diguanidine sulfosuccinate is a mixture of d guanidine sulfosuccinic esters corresponding to the inonohydrio alcohols present in Lorol B.

EXAMPLE 1? This example illustrates the use of Lorol B diguanidine sulfosuccinate as an antistatic agent in the treatment of an acrylonitrile polymeriza tion product. The acrylonitrile polymerization product was a copolymer of about 95% acrylonitrile and 5% methyl acrylate, and had a molec= ular weight of approximately 78 000 as calculated by the Staudinger equation from a viscosity measurement (reference: U; S. Patent No. 2,404,713). A spinning solution was produced from this copolymer by dissolving 7.5% of it in 92.5% of a 48% aqueous solution of calcium thiocyanate. After filtering and de-aerating, the solution had a viscosity of 37.2 see. as determined by the time for a Monel ball, A; inch in diameter; to fall through 20 cm; of the solution maintained at 61 G.

The spinning solution was spun into' a fiber (continuous filament yarn) by continuously extruding it through a 40-hole spinnerette with holes of microns diameter into a coagulating bath comprising water maintained at a temperature of about +1 C. The solution was heated inside the spinnerette prior to extrusion to about '75'-'80f C. by means of a steam-heated finger. The solution was pumped through the spinnerette at the rate of about 8.05 cc. per minute. From the coagulating bath the wet, gelled fiber was led at the rate of 9.2 meters per minute over a pair of revolving rolls which were slightly inclined (i. e., converged) toward each other at the delivery end, thereby to advance the gelled fiber over the rolls while traveling in a helical path. During its passage over these rolls the fiber was continuously washed with a liquid treating a ent 17 comprising water maintained at a temperature of about to'5 C. From the wash rolls the fiber passed through a trough containing water maintained at a temperature of about 995 C. and thence through a bath of an antistaticcomposition made by diluting the slurry of Example 16 with water to form an aqueous solution containing about 2% of Lorol B diguanidine suli'osuccinate. This antistatic composition was maintained at a temperature of about 50-60 C. From the antistatic bath the fiberwas continuously led to a pair of heated drying rolls which revolved at a higher peripheral speed than the aforementioned wash rolls, so that the fiber was stretched approximately 693% durin its passage through" the hot-water stretch bath. The drying rolls also converged slightly toward each other at the delivery end so that the fiber advanced in ahelical form over their surfaces. The surface temperature of the drying rolls was about 70-7 5 C. The dried fiber was then given an'after-heat treatment, while in a relaxedst-ate and free to contract linearly, in essentially the same manner described in the copending application of Arthur Cresswell and Irvin Wizon, Serial No. 97,786, filed June 8, 1949, now Patent'No. 2,558,733, dated July 3, 1951. The continuously running fiber was rapidly passed in relaxed state through a short, heated zone maintained at a temperature of about 400 C. and was then twisted and taken up on a collecting bobbin. The retraction effected by passing the fiber in relaxed state through the'heating zone was 5 The final take-up speed was approximately 60.3 meters per minute.

The effectiveness of Lorol B diguanidine sulfosuccinate as an antistatic agent was evidenced by the fact that there was no filament ballooning during the passage of the fiber over the drying rolls. Furthermore, the finished thread did not accumulate an electrostatic charge when stroked either with the hand or with a strip of cellulose acetate.

EXAMPLE 13 This example illustrates the use of octadecyl diguanidine sulfosuccinate as an antistatic, agent in the treatment of an acrylonitrile polymerization product, specifically a copolymer of ab ut 95% acrylonitrile and 5% methyl acrylate having a molecular weight of about 79,600 as calculated by the Staudinger equation from a viscosity measurement. The same apparatus and essentially the same procedure were followed in this example as were described in the preceding example;

Aspinning solution was prepared from the acrylonitrile-methyl acrylate copolymer by dissolving 9.7% of it in 90.3% of an'approximately 50% aqueous solution of sodium thiocyanate. After filtering and de-aerating, the solutionhad a viscosity of 28.5 sec. as determined in the manner described under Example 17. This solution was spun into a fiber by pumping the solution through the 40-hole spinnerette at the rate of about 4.82 cc. per minute. The wet, gelled fiber was led in the form of helices at the rate of about 6.0 meters per minute over the pair of revolving wash rolls. The washed, gelled fiber was stretched 590% while passing through water maintained at about 99 C., after which the stretched fiber was led through the bath of antistatic composition comprising a 2% aqueous solution of octadecyl diguanidine sulfosuccinate and maintained at a temperature of about 60 C.

The yarn ran" well on the drying rolls and there was no ballooning ofthe filaments, indicating that the sulfosuccinate salt had been effective in imparting antistatic characteristics to the yarn. The continuously running fiber was passed in relaxed state through a heated zone maintained at about 280 C., the retraction which was effected by this treatment being ap: proximately 11.9%, The final take-up speed, as the yarn was twisted and taken upon a collecting bobbin, was 31.2 meters per. minute.

The finished yarn did not develop any electrostatic charge when stroked either with the hand or with a piece of cellulose acetate in strip form. This is inmarked contrast to the results obtained when octadecyl disodium sulfosuccinate is similarly applied, since this compound was found to be ineffective in imparting antistatic properties to a fiber of an acrylonitrile polymerization product. i

EXAMPLE 19 e 1 This example illustrates the use of an antistatic finishing composition containing octadecyl diguanidine sulfosuccinate. and a lubricant, .spe-. cifically butly stearate, inthe treatment ofjan acrylonitrile polymerization product, more particularly homopolymeric acrylonitrile having a molecular weight of approximately 90,000. .A spinning solution was prepared by dissolving 6.94% of homopolymeric acrylonitrile in 93.06% of a 50% aqueous solution of calcium thiocyanate.

The viscosity of this solution was 25.7 see. as determined by the method described under Example 17. i The solution of polyacrylonitrile was spun by extruding it at about 70-80 C. through a 40-hole spinnerette having holediameters of microns into a spinning bath comprising water at 12F, C. The coagulated fiber was carried back and forth through the bath by means'of a power-driven, submerged godet placed at one end of thebath and a set of free-running rollers at the other end. The total bath travel of the fiber was about 144 inches. Upon leaving the coagulating bath the yarn was subjected during its travel to a stretch of about 730% in a water bath. maintained at 98-99 C. From the stretch bath, the gelled fiber was led through an antistatic.bathconsisting of water having dispersed therein 2% of octadecyl diguanidine sulfosuccinate and 0.5% butyl stearate. This antistatic bath was maintained at a temperature of about 50-60 C. Thereafter the treated fiber was led over a pair of heated, converging, dryingrolls maintained at a surface temperature of about 75 C. and thence, in relaxed state, through a heated zone maintained. at a temperature of about 280C. The treated yarn ranwellon the dryingrolls and there was no filament ballooning of the fibers during dryingin'a dicating that the antistatic treatment had been effective. The retraction effected by passing the thread in relaxed state through the heating zone was 15.8%. The yarn, as collected on the collecting bobbin, contained about 1.5% of finish (octadecyl diguanidine sulfosuccinate plus butyl stearate) and showed no signs of accumulating" an electrostatic charge when stroked either with the hand or with a strip of cellulose acetate.

EXAMPLE 20 The following fibers produced from other thermoplastic vinyl resins were used in this example:

1C Orlon (a polyacrylonitrile fiber): 2. Vinyon (made from .a high+molecular weight copolymer of about 8890% vinyl chloride and about 12-10% vinyl acetate) 3. Vinyon N (made from a copolymer of about 60% vinyl chloride and about 40% acrylonitrile) Dry swatches of the above fibers became readily charged with static electricity when stroked with the hand.

vEach of the dryswatches was immersed in an aqueous solution containing about"2% of" octadecyl diguanidine sulfossuccinate for about 1 or 2 minutes, the solution being maintained at a temperature of about 50-60 C. during the treatment, after which they were dried first at room temperature and then in an oven maintained at about-60 C. for about 60 minutes. The dry, treated swatches did not develop any'electrostatic charge when stroked either with the hand orwith a piece of cellulose acetate in strip form.

It will be understood, of course, by those skilled in the art that our invention isnot limited to the use of the specific sulfosuccinate salts described in: the above illustrative examples, since other compounds of the kind embraced by Formula I similarly can be prepared and used as antistatic agents or for other purposes.

Because of the long-chain aliphatic radical whichthey'contain, the sulfosuccinate salts of the kind covered by Formula I are capable of functioning both as a lubricating agent and as an antistatic agent for treating textile-and other materials. They are useful not only in improving the useful properties of textile fibers and fabrics which, ina dry state, normally accumulate static charges of electricity, but also various other shaped orv formed articles, e. g., phonograph records made of" vinyl resins, vinyl or other plastic materials in sheet or filmform, photograph films formed of a cellulose ester or other material that tends to accumulate an electrostatic charge, etc.

In addition to their use as antistatic agents, the aforementioned sulfosuccinate salts are also use ful as non-durable softening agents for various textile materials; especially those made ofcotton or rayon. Those which are particularly useful for this purpose are, the sulfosuccinate salts that cause. no serious yellowing, if any, when the'fab rics treated therewith are heated, e. g., for three days at 95 C. In, general, our new compounds are capable of softening or plasticizing starch finishes, and do not cause any changes in shade or decrease in the light-fastness of dyes when applied to dyed fabrics.

We claim:

, 1.. The method of conditioning a shaped article comprising a thermoplastic vinyl resin to lessen its tendency to accumulate static charges of electricity thereon, said method comprising applying to, thesaid article a volatile liquid containing a sulfosuccinate salt .represented by the general formula ooofon .-O O Q-CHr-CH SOs-"GD ene radicals and hydroxyalkylene radicals each.

containing from 2 to 5 carbon atoms, inclusive, an Gn represents a cationic salt-forming substance of the class consisting of guanidine, loweralkylguanidines, phenylguanidines, alkylolguanidines, guanylurea, biguanide and phenylbiguanides, and the amount of the said liquid containing the. said salt which is applied to the said article being such that the finished article has associated therewith from, by weight, 0 2% to 4% of the said salt, based on the weight of the dry, untreated article, and drying the thusly treated article.

2. A method as in claim 1 wherein. the thermoplastic vinyl resin contains in its molecules a substantial amount of combined acrylonitrile.

3.. A method as in claim 1. wherein the sulfosuccinate salt comprises dodecyl diguanidine sulfosuccinate.

4. A method as in claim 1, wherein the sulfosuccinate salt comprises octadecyl diguanidine sulfosuccinate.

5. .A method as in claim. 1 wherein the sulfosuccinate salt comprises octadecyl bis-(Z-hydroxyethylguanidine) sulfosuccinate.

6. A method as in claim 1. wherein the sulfosuccinate salt comprises octadecyl bis-(guanylurea) sulfosuccinate.

'7. A method as in claim 1 wherein the. shaped article is a yarn comprising fibers of a thermoplastic product of polymerization of a polymerizable mass-comprising a preponderant proportion by weight of acrylonitrile.

8. The method which comprises applying a liquid treating agent to a fiber in. gel state and in which the solid phase comprises an acrylonitrile polymerization product containing in the molecules thereof an average of at least about by weight of combined acrylonitrile, said treating agent comprising an aqueousliquid containing a sulfosuccinate salt represented by the general formula oooon zooo-oHi-oH SO3-GI1 wherein Z representsa grouping-of the class .consisting of and wherein R and R each representsv a long- 1 chain aliphatic hydrocarbon radical and R represents a radical of the class consisting of alkylene radicals and hydroxyalkylene radicals each containing from 2 to 5 carbon atoms, inclusive, and Gn represents a cationic salt-forming substance of the class consisting of guanidine, lower alkylguanidines, phenylguanidines, alkylolguanidines, guanylurea, biguanide and phenylblguanides, and drying the thusly treated, gelled fiber, the said sulfosuccinate salt imparting antistatic characteristics to the said fiber during and after drying thereof, and the. amount of the said treating agent which is applied to the said fiber being such that the dried. fiber hasassociated therewith from, by weight, 0.2% to 4% of the said sulfosuccinate salt, based, on the: weight of the dried, untreated fiber.

9. A shaped article comprising a thermoplasticvinyl resin which in. a dry state normally has a tendency to accumulate static, charges of elec-- tricity thereon, said: article having deposited atv wherein Z represents a grouping of the class consisting of and wherein R and R each represents a longchain aliphatic hydrocarbon radical and R." represents a radical of the class consisting of alkylene radicals and hydroxyalkylene radicals each containing from2 to carbon atoms, inclusive, and Gn represents a cationic salt-forming substance of the class consisting of guanidine, loweralkylguanidines, phenylguadinine alkylolguanidines, guanylurea, biguanide and phenylbiguanides, and said sulfosuccinate salt lessening the tendencies of the said article to accumulate static charges of electricity thereon and being associated with the said article in an amount corresponding to from 0.2% to 4% of the weight of the dry, untreated article.

10. A textile formed of fibers including fibers of a thermoplastic product of polymerization of polymerizable vinyl compound including acrylonitrile, said textile in a dry state normally having a tendency to accumulate static charges of electricity thereon and, to lessen this tendency, having deposited at least on outer surfaces thereof an antistatic agent comprising a sulfosuccinate salt represented by the general formula 22 wherein 2 represents a grouping of the class consisting of and wherein R and R each represents a longchain aliphatic hydrocarbon radical and R" represents a radical of the class consisting of alkylene radicals and hydroxyalkylene radicals each containing from 2 to 5 carbon atoms, inclusive, and Gn represents a cationic salt-forming substance of the class consisting of guanidine, loweralkylguanidines, phenylguanidines, alkylolguanidines, guanylurea, biguanide and phenylbiguanides, the amount of the said sulfosuccinate salt which is associated with the said textile corresponding to from 0.2% to 4% of the weight of the dry, untreated textile.

11. Textile fibers formed of an acrylonitrile polymerization product containing in the molecules thereof an average of at least about by weight of combined acrylonitrile, said fibers having deposited at least on outer surfaces thereof a conditioning agent comprising octadecyl diguanidine sulfosuccinate, which compound lessens the tendencies of the said fibers to accumulate static charges of electricity thereon and constitutes from 02% to 4% of the weight of the dry, untreated fibers.

and

JOSEPH J. CARNEIS. WILLIAM T. BOOTH, JR.

References Cited in the file of this patent FOREIGN PATENTS Number 

1. THE METHOD OF CONDITIONING A SHAPED ARTICLE COMPRISING A THERMOPLASTIC VINYL RESIN TO LESSEN ITS TENDENCY TO ACCUMULATE STATIC CHARGES OF ELECTRICITY THEREON, SAID METHOD COMPRISING APPLYING TO THE SAID ARTICLE A VOLATILE LIQUID CONTAINING A SULFOSUCCINATE SALT REPRESENTED BY THE GENERAL FORMULA 